/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *
 */

package org.apache.streampipes.export;

import org.apache.streampipes.model.assets.AssetLink;
import org.apache.streampipes.model.assets.SpAsset;
import org.apache.streampipes.model.assets.SpAssetModel;

import java.util.HashSet;
import java.util.Set;

public class AssetLinkCollector {

  private SpAssetModel assetModel;

  public AssetLinkCollector(SpAssetModel assetModel) {
    this.assetModel = assetModel;
  }

  public Set<AssetLink> collectAssetLinks() {
    var assetLinks = new HashSet<>(assetModel.getAssetLinks());
    assetModel.getAssets().forEach(asset -> addLinks(assetLinks, asset));

    return assetLinks;
  }

  private void addLinks(HashSet<AssetLink> assetLinks,
                        SpAsset asset) {
    assetLinks.addAll(asset.getAssetLinks());
    if (asset.getAssets() != null) {
      asset.getAssets().forEach(a -> addLinks(assetLinks, a));
    }
  }
}
